Generally, rank is a system of hierarchy used to classify like things. Top Ten lists are a common way to list prioritized ranks (usually as a subset of a larger pool of possibilities). Rank can refer to:

• Military rank
• Ranks of nobility and peerage
• Academic rank
• Church rank
• J. Arthur Rank
• Otto Rank
• Rank (band)
• Rank, a live album by The Smiths.
• Rank order
• Social rank
• Rank (mathematics):
  • Rank (linear algebra, matrix theory)
  • Rank of a tensor
  • Rank of an array
  • Rank of an abelian group
  • Rank (set theory)
  • Rank-into-rank
  • Rank of a greedoid (maximum size of a feasible set)
• Rank Organisation
• Go rank

In a pipe organ, a rank of pipes is a set tuned to a chromatic scale, and used together to play that scale. A stop may consist of one or more ranks.